21716116070 has 16 divisors (see below), whose sum is σ = 42642555408. Its totient is φ = 7896769440.

The previous prime is 21716116033. The next prime is 21716116073. The reversal of 21716116070 is 7061161712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21716116073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98709509 + ... + 98709728.

It is an arithmetic number, because the mean of its divisors is an integer number (2665159713).

Almost surely, 2^21716116070 is an apocalyptic number.

21716116070 is a deficient number, since it is larger than the sum of its proper divisors (20926439338).

21716116070 is a wasteful number, since it uses less digits than its factorization.

21716116070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197419255.

The product of its (nonzero) digits is 3528, while the sum is 32.

Adding to 21716116070 its reverse (7061161712), we get a palindrome (28777277782).

The spelling of 21716116070 in words is "twenty-one billion, seven hundred sixteen million, one hundred sixteen thousand, seventy".